<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Title</title>

    <style>
        body {
            background-color: dimgrey;
        }

        .content {
            width: 900px;
            margin: auto;
        }

        h1 {
            font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
            font-size: 30px;
            margin-top: 100px;
            text-align: center;
        }

        .content .main {
            margin: auto;
        }

        h1,
        h2,
        h3 {
            color: white;
        }
    </style>

</head>

<body>
    <div class="content">
        <div class="main">
            <h1>统计结果</h1>
            <br>
            {# {{ }}----->jinja2 #}
            <h2>元音字母出现的次数：{{ found }}</h2>
        </div>
    </div>
</body>

</html>